Water-heater.



N0. 54mm. Patented Jan. 2, I900.

C. W. REINEKE 81. W. A. FRITSCH.

WATER HEATER.

(Application filed Apr. 4, 13 9-) {No Model.) 2 Sheets$heet l,

A TTORNEYS.

THE Mundls pzrzns co. PHOTQ-LITNQ. WASHINGTON. q. of

We. 6%,445. V Patented Jan. 2, I900. E. W. REINEKIE & W. A. FRITSCH.

WATER HEATER.

(Application filed Apr. 24, 1 899.)

(N0 Wodek.) 2 Sheets-Sheai 2- rricn,

CHARLES 1V. .tlEINEKE AND XVILLIAM A. FRITSCH, OF PITTSBURG, PENNSYLVANIA.

WA'lI'ER l-i tarts.

SPEGIFICATION forining part of Letters Patent No. 640,415, dated January 2, 1900.

Application filed April 24, 1899. Serial No. 71 L385. (No model.)

To alt whom it may concern.-

Beitknown that we, CHARLES W. REINEKE and WILLIAM A. FRITSCH, citizens of the United States of America, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, havcinvented certain new and useful Improvements in Water-Heaters, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in automatic waterheaters, and more particularly to that class in which a thermostat is employed to automatically regulate the burners in accordance with the temperature of the water.

The invention has for its object the provision of novel means whereby alarge amount of heatingsurface is obtained in the boiler; and the invention further aims to construct an apparatus whereby the water will be quickly heated.

The invention has for its still further object to construct an apparatus of the abovereferred-to class that will be extremely simple in its construction, strong, durable, and comparatively inexpensive to manufacture.

The invention still further aims to provide an apparatus of the above-referred-to class with regulating means that will be extremely sensitive for regulating the gas-supply to the burners.

With the above and other objects in view ourinvention finally consists in the novel construction, combination, and arrangement of parts to be hereinafter more particularly de scribed, and specifically pointed out in the claim.

In describing the invention in detail reference is had to the accompanying drawings, forming a part of this specification, wherein like numerals of reference indicate corresponding parts throughout the several views thereof, and in which- Figure 1 is a vertical sectional view of our improved apparatus. Fig. 2 is a transverse horizontal sectional view taken on the line at :0, Fig. 1. Fig. 8 is a plan view of the annular gas-supply pipe, showing the connections. Fig. 4: is an enlarged detail view of a section of the spiral coil. Fig. 5 is a vertical sectional View of the same. Fig. 6 is an enlarged detail View, partlyin section, of the coupling connecting the coils. Fig. 7 is a vertical sectional view of the check-valve arranged in the hot-water pipe.

Referring to the drawings by reference-numerals, 1 indicates a casing, which may be of cylindrical or other desirable form and through which extends a cold-water-supply pipe 2, communicating with the water-chamher 3. This water-chamber is formed by a segment-shaped casing 4 and has arranged within the same a thermostat for controlling the supply of gas.

A series of heating-coils 7 are arranged within the casing 1 and supported by means of an annular flange 1, secured to or formed intogral with the inner face of the casing 1 a short distance above the gas-burners. The lower ends 6 of these heating-coils are 0011- nected, as at 5, to the casing 4, and their upper ends 8 are connected, as at Q, to a coupling 10, said coupling being apertured at 11 to conform to the interior diameter of the water-coils and is recessed, as at 12, to receive a jam-nut 14, by means of which the ends 18 of the water-coils are held in position. The recess 12 is provided with screw-threads 13 to receive this jam-nut, while the ends of the water-coils are flanged, as at 15, and abut against the shoulder formed by the recess 12. This coupling forms an inlet for the watercoils to the hot-water-outlet pipe 15, the latter extending upwardly through the dome of the casing or in any desired direction and also extending downwardly from the coupling 10 and communicating with the chamber 3. A check-valve 16 is arranged in the pipe 15 between the coupling 10 and the casing 4.

The operating-rod 17 of the thermostat has its one end extending outwardly through the casing 1 and has connected thereto, as at 18, a bell-crank lever 19, which in turn is pivotally connected at 20 to a bracket 21, rigidly secured to the exterior of the casing. The

other end of the bell-crank lever is pivotally connected at 22 to a valve-stem 23,Which carries a valve 2i, adapted to operate against a valve-seat 25, formed therefor in the valvecasing 26, said casing being secured to the gas-supply pipe 27. This valve-casing 26 also has connected thereto a burner-supply pipe 28, which is substantially circular in form and provided with a series of nipples 29,

adapted to receive the burners 30, arranged below the water-coils.

A pilot-light-supply pipe 3 communicates with the chamber of the valve above the valve-seat and carries a small burner 32, which is suitably arranged so as to ignite the gases at the burners 30.

The operation of our improved water-heater is as follows: Cold water is admitted through the cold-water-supply pipe 2 into the waterchamber 3, and the action of this cold Water upon the thermostat will cause the latter to contract, thereby raising the valve-stem 23 through its connections with the rod 17 and bell-crank 19, opening the valve 24, permitting the gas to pass from the supply 27 into the burner-supply pipe 28, where it is ignited by the pilot-light. The water admitted into the chamber 3 flows through the connections 6 into the water-coils 7 and is heated by the gas during its passage through these coils. As this heated water flows downwardly through the hot-water pipe 15 and is discharged into the outlet-chamber 3 the water in said chamber is raised to a higher degree of temperature, which causes the thermostat to expand and operate the valve 24, so as to close the same entirely or partially, according to the expansion imparted to the thermostat.

We desire to call particular attention to the fact that the water-coils are of less diameter than that of the hot-water-outlet pipe 15, and in practice we employahot-water-outlet pipe of about twice the diameter of the water-coils. By this means the water may be much more rapidly heated and also a more effective circulation be obtained than would be the case were the pipe from which the water-coils are formed of an equal diameter with that of the hot-water-outlet pipe.

The check-valve 16 is arranged in the hotwater-outlet pipe 15 in order to cut off the cold water that would otherwise be permitted to flow directly into the hot-water pipe from the water-chamber 3.

The pilot-light will be constantly burning,

and by reason of the burners being arranged 56 in the manner shown and inclosed in the casing the same may be rapidly ignited when the gas-valve is opened.

It will be observed that each of the coils consists of aplurality of volute coils, the convolution of each separate coil being on the same plane, with the exception of the portion of the pipe which connects the one volute coil with the succeeding one. By this construction each convolution of the coil receives the full benefit of the fiame from the burner, serving to accelerate the heating of the wa ter to a considerable extent.

It will be noted that various changes may be made in the details of construction without departing from the general spirit of our invention.

Having thus fully described our invention, What we claim as new, and desire to secure by Letters Patent, is-

In a water-heater, a series of independent water-coils, a Water-chamber to which the lower ends of said coils are connected and a water-outlet to which the upper ends of said coils are connected, combined with a gas-supply for heating the water within said coils, a controlling-valve arranged within said gassupply, and a thermostatic controlling device for regulating the supply of gas passing through said valve, and comprising a curved arm arranged within the water-chamber with its one end connected to a wall thereof, a valve-rod extending into said chamber and having the other end of said curved arm connected thereto,a pivoted bell-crank connected to the outer end of said rod and to the valvestem of the controlling-valve, and means for guiding said rod in a straight line when actuated by the expansion and contraction of the curved arm, substantially as described.

In testimony whereof we affix our signatures in the presence of two witnesses.

CHARLES W. REINEKE. WILLIAM A. FRITSCH.

Witnesses:

JOHN NOLAND, E. W. ARTHUR. 

